This endpoint returns a list of all available tournaments for all the sports provided by SR.
*Special note on the tournament(s).xml endpoint
You can still receive information about a match that is associated with a tournament, even if it is not on the returned list from the endpoints. This could, for example, happen with lower-division soccer league matches where Sportradar does not provide full league coverage, but may do so only upon request from one or more bookmakers. Such tournaments are typically not listed, and Sportradar does not provide a tournament schedule for these tournaments.
Therefore, it is essential not to assume that these endpoints will return for every single tournament of interest, but rather for all available tournaments where Sportradar provides coverage, and/or customers purchase coverage for a particular match.